LOUD creaking sound

bredekamp · 10-20-2007, 04:58 AM

Hi all,

My Prius was parked at work. It was about 35C, no shade unfortunately. I came outside to go home and when I opened the boot I heard a LOUD, and I mean LOUD, creaking noise. I thought the lifters were giving trouble. I moved the boot lid up and down from it's open position to try and pinpoint the noise. Turns out the top hinges were creaking very loudly. They were also hard to move.

I remembered the boot lid is made from aluminium and the rest of the car from steel. The two have different expansion ratios. In the heat, the hinges must have become tight cause when the car is cool the boot lid opens smoothly, no noise.

I decided a dab of chain lube on the hinges might do the job. I'll try it and report back. Anyone else noticed this?

richard schumacher · 10-20-2007, 02:11 PM

No, not even at 40'C. Insignificant manufacturing variation, perhaps. Let us know how the lube serves.

alanh · 10-22-2007, 01:30 AM

I've had my Prius at 46C parked in the sun and haven't had a problem.

10-20-2007, 04:58 AM	#1
bredekamp Senior Member Join Date: Feb 2007 Location: Somerset West, South Africa Posts: 569 My Car: 2006 Prius Model: Package: #6 Touring Thanks: 4 Thanked 11 Times in 7 Posts Friends: 0	Hi all, My Prius was parked at work. It was about 35C, no shade unfortunately. I came outside to go home and when I opened the boot I heard a LOUD, and I mean LOUD, creaking noise. I thought the lifters were giving trouble. I moved the boot lid up and down from it's open position to try and pinpoint the noise. Turns out the top hinges were creaking very loudly. They were also hard to move. I remembered the boot lid is made from aluminium and the rest of the car from steel. The two have different expansion ratios. In the heat, the hinges must have become tight cause when the car is cool the boot lid opens smoothly, no noise. I decided a dab of chain lube on the hinges might do the job. I'll try it and report back. Anyone else noticed this? __________________ My Prius.co.za Hybrid vehicle information for South Africa

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10-20-2007, 02:11 PM	#2
richard schumacher shortbus driver Join Date: Mar 2004 Location: United States Posts: 7,379 My Car: 2004 Prius Model: N/A Package: #6 Thanks: 583 Thanked 758 Times in 306 Posts Friends: 0	No, not even at 40'C. Insignificant manufacturing variation, perhaps. Let us know how the lube serves.

10-22-2007, 01:30 AM	#3
alanh Senior Member Join Date: May 2007 Location: Phoenix, AZ Posts: 1,170 My Car: 2007 Prius Model: Package: #5 Thanks: 66 Thanked 85 Times in 60 Posts Friends: 0	I've had my Prius at 46C parked in the sun and haven't had a problem.